New! View global litigation for patent families

US4834257A - Reinforced wall structure for a transformer tank - Google Patents

Reinforced wall structure for a transformer tank Download PDF

Info

Publication number
US4834257A
US4834257A US07131704 US13170487A US4834257A US 4834257 A US4834257 A US 4834257A US 07131704 US07131704 US 07131704 US 13170487 A US13170487 A US 13170487A US 4834257 A US4834257 A US 4834257A
Authority
US
Grant status
Grant
Patent type
Prior art keywords
transformer
walls
tank
assembly
frame
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US07131704
Inventor
William J. Book
John W. Hatfield
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
ABB Inc
Original Assignee
Westinghouse Electric Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Grant date

Links

Images

Classifications

    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01FMAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00Details of transformers or inductances, in general
    • H01F27/02Casings

Abstract

A reinforced wall structure for a transformer tank characterized by a tank having opposite tank walls and braces on the walls for stiffening the walls against deflection. A transformer assembly including a transformer mounting end frame and a transformer within the end frame is mounted in the tank with the end frames adjacent to the braces so as to limit lateral movement of the assembly when an overcurrent condition occurs. A cooling fin assembly is mounted on each tank wall on the side opposite the braces.

Description

BACKGROUND OF THE INVENTION

1. Field of the Invention

This invention relates to a reinforced wall structure for a transformer tank that is subjected to pressures within the tank occurring as the result of overcurrent conditions during operation of a transformer.

2. Description of the Prior Art

Tanks containing a transformer submerged in cooling fluid are normally subjected to overcurrent conditions, such as short circuits, across the secondary and load conductors. Heretofore, transformers, such as a three-phase distribution transformer, were comprised of a core/coil assembly which was mounted within a mounting or U-frame for holding the assembly intact during handling and/or shipping. The core/coil assembly together with the mounting frame were in turn mounted within a reinforcing frame when installed within a transformer tank. The function of the reinforcing frame was to limit or subdue any expansive movements of the transformer resulting from expansive pressures incurred by the transformer coils due to any overcurrent conditions such as short circuits. Because of the reinforcing frame, a larger tank was required to enclose the assembly of the transformer, mounting frame, and reinforcing frame, which in turn requires a larger volume of cooling fluid. Manifestly, a more costly transformer structure was involved. Competitively, a less costly transformer structure was necessitated.

SUMMARY OF THE INVENTION

In accordance with this invention a reinforced wall structure for a transformer tank is provided which comprises a tank having opposite tank walls, brace means on the walls for stiffening the opposite walls against deflection, a transformer assembly within the tank and extending between the brace means of the opposite walls, the brace means including rigid channels fixedly mounted on the inside surface of at least one of the walls, the transformer means including a transformer and transformer mounting frame and the frame including opposite end frame members adjacent to the rigid channels, the brace means also including packing material between the frame members and the channels to prevent initial movement of the transformer assembly, the channels being horizontally disposed, and a cooling fin assembly mounted on the outside of the walls opposite the rigid panels so as to reinforce the walls, whereby any expansion of the transformer assembly toward the opposite tank walls is limited by the brace means, side walls and fins.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a vertical sectional view through a three-phase transformer; and

FIG. 2 is an exploded view of the support frame and tank of the transformer as shown in FIG. 1.

DESCRIPTION OF THE PREFERRED EMBODIMENT

In FIG. 1 a transformer structure is generally indicated at 3 and it comprises a tank 5 which contains a transformer assembly 7 which, in turn, include a transformer unit 9 and a mounting frame 11. The transformer structure also includes a plurality of similar heat exchanger panels 13, 15, 17 extending from the end and side walls of the tank 5 (FIG. 2).

Although the tank 5 is disclosed as containing a transformer assembly 7, it is understood that other electrical apparatus that is operated and submerged within a cooling fluid is within the scope of this invention. The tank 5 contains a dielectric or cooling fluid having a level 19.

The tank 5 comprises a pair of opposite end walls 21, 23 and a pair of opposite side walls 25, 27. As shown in FIG. 2, the end walls include outlet and inlet openings 29, 31 in the end walls 21 and 23, and the side wall 25, include inlet and outlet openings 33, 35. The inlet openings 29, 33 enable the dielectric or cooling fluid at the level 19 to enter the several heat exchangers 13, 15, 17, and reenter the tank at the lower outlet openings 31, 35. As shown in FIG. 1 when the transformer assembly 7 is mounted within the tank 5, it is supported on suitable means, such as a pair of support members 37, on a bottom wall 39 of the tank and below a top wall or cover 41.

In accordance with this invention the transformer unit is a polyphase structure, such as three phase, including three similar coils 43 and four cores 45 of conventional construction. The transformer unit 9 is contained within the mounting frame 11 which is a U-shaped member comprised of end frames 47, 49 and a bottom frame 51 which are preferably integral. The mounting frame 11 also includes a removable top frame 53. When the frame members 47-53 are completely assembled, the core/coil assembly 43, 45 is rigidly retained in place with opposite ends of the top frame 53 secured to the upper ends of the end frames 47, 49 in a suitable manner such as bolts. When assembled the transformer assembly 7 is lowered into place between the end walls 21, 23.

More particularly, the transformer assembly 7 may be substantially centrally disposed, or positioned off-center as desired, between the end walls 21, 23 by brace means including a pair of upper and lower braces 55, 57 at each wall. In addition, the brace means includes packing material 59 between the braces 55, 57, and the respective walls 47 or 49 or both.

The braces 55, 57 are horizontally disposed in spaced relation on each end wall, and are secured in place such as by welding. Each brace 55, 57 may be provided with a plurality of holes 61 which are aligned with corresponding holes 63 on the corresponding end frames 47, 49. In another embodiment, the braces 55, 57 and the packing material 59 may be employed at only one end wall 21.

When the transformer assembly 7 is secured in place, the end frames 47, 49 are bolted tightly with aligned holes 63, 61 to prevent movement of the transformer assembly 7 with respect to the interior walls of the tank, and, more particularly, with respect to the end walls 21, 23. In addition, the packing material 59 is disposed between the corresponding end frames 47, 49 and the braces 55, 57. In this manner, the packing material 59 inhibits any movement whatsoever of the end frames 47, 49, when the coil/core assembly undergoes an overcurrent condition. The packing material is necessary in addition to the braces 55, 57 in order to avoid any initial minute movement of the transformer assembly 7. By avoiding any small or initial movement, shifting of the overall transformer assembly 7 and therefore destruction of the transformer is avoided.

Manifestly, the braces 55, 57 distribute any pressure applied during an overcurrent condition over the entire surfaces of the tank end walls 21, 23. The heat exchangers 13, 15, in addition to cooling the coolant fluid serve to reinforce the walls 21, 23 against deformation or destruction which otherwise might occur during an overcurrent condition in the transformer.

In conclusion, it is pointed out that the transformer structure of this invention significantly reduces the cost of a three-phase distribution transformer core/coil assembly by utilizing the tremendous mechanical strength of the side wall cooling fins or heat exchangers which in conjunction with the welded horizontal channel braces on the inside walls facilitate the distribution of the overcurrent forces evenly along the side walls. Finally, the use of a more simplified U-frame support assembly for the transformer permits the use of a smaller tank than was feasible with transformer tanks of prior construction which, by necessity, included the massive reinforcing frame.

Claims (5)

What is claimed is:
1. A reinforced wall structure for a transformer tank, comprising:
(a) a tank having opposite tank walls;
(b) brace means including rigid channels on at least one wall stiffening the wall against deflection;
(c) a transformer assembly within the tank and extending substantially between the brace means on one or more of the opposite walls; said transformer assembly including a transformer mounting frame and the frame including opposite end frame members adjacent to the rigid channels; and
(d) packing material between the frame members and the rigid channels to prevent initial movement of the transformer assembly, whereby any expansion of the transformer assembly toward the opposite tank walls is limited by the brace means.
2. The structure of claim 1 in which the brace means are mounted on both end walls.
3. The structure of claim 1 in which the rigid channels are horizontally disposed.
4. The structure of claim 1 in which a cooling fin assembly is mounted on the side of the walls opposite the rigid channels so as to reinforce the walls.
5. The structure of claim 1 in which the rigid channels are welded in place on their respective walls and the end frame members are bolted onto the rigid channels.
US07131704 1987-12-11 1987-12-11 Reinforced wall structure for a transformer tank Expired - Lifetime US4834257A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US07131704 US4834257A (en) 1987-12-11 1987-12-11 Reinforced wall structure for a transformer tank

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US07131704 US4834257A (en) 1987-12-11 1987-12-11 Reinforced wall structure for a transformer tank
EP19880311492 EP0320187A1 (en) 1987-12-11 1988-12-05 Transformer tank
JP16046288U JPH0193711U (en) 1987-12-11 1988-12-09

Publications (1)

Publication Number Publication Date
US4834257A true US4834257A (en) 1989-05-30

Family

ID=22450647

Family Applications (1)

Application Number Title Priority Date Filing Date
US07131704 Expired - Lifetime US4834257A (en) 1987-12-11 1987-12-11 Reinforced wall structure for a transformer tank

Country Status (3)

Country Link
US (1) US4834257A (en)
EP (1) EP0320187A1 (en)
JP (1) JPH0193711U (en)

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5026373A (en) * 1988-10-17 1991-06-25 Surgical Dynamics, Inc. Surgical method and apparatus for fusing adjacent bone structures
US5246286A (en) * 1991-04-03 1993-09-21 Snap-On Tools Corporation Adhesively bonded tool cabinet and method of assembly thereof
US5736915A (en) * 1995-12-21 1998-04-07 Cooper Industries, Inc. Hermetically sealed, non-venting electrical apparatus with dielectric fluid having defined chemical composition
US5766517A (en) * 1995-12-21 1998-06-16 Cooper Industries, Inc. Dielectric fluid for use in power distribution equipment
US6037537A (en) * 1995-12-21 2000-03-14 Cooper Industries, Inc. Vegetable oil based dielectric coolant
US6234343B1 (en) 1999-03-26 2001-05-22 Papp Enterprises, Llc Automated portable medication radial dispensing apparatus and method
US6352655B1 (en) 1995-12-21 2002-03-05 Cooper Industries, Inc. Vegetable oil based dielectric fluid
US6398986B1 (en) 1995-12-21 2002-06-04 Cooper Industries, Inc Food grade vegetable oil based dielectric fluid and methods of using same
US6667438B2 (en) * 2001-12-05 2003-12-23 Ermco Padmount transformer enclosure
US20050237222A1 (en) * 2004-04-24 2005-10-27 Bogash Robert C Universal medication carrier
US20080110786A1 (en) * 2006-11-09 2008-05-15 Bossi Christopher E Blister card carrier
US20110132579A1 (en) * 2008-08-11 2011-06-09 Green Revolution Cooling, Inc. Liquid Submerged, Horizontal Computer Server Rack and Systems and Method of Cooling such a Server Rack
US20110273255A1 (en) * 2010-05-10 2011-11-10 Robert Samuel Thompson Endoskeletal transformer tank
CN102881410A (en) * 2012-09-27 2013-01-16 宜兴市兴益特种变压器有限公司 Smoothing reactor
US9504190B2 (en) 2013-05-06 2016-11-22 Green Revolution Cooling, Inc. System and method of packaging computing resources for space and fire-resistance
US9756766B2 (en) 2014-05-13 2017-09-05 Green Revolution Cooling, Inc. System and method for air-cooling hard drives in liquid-cooled server rack

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1261637A (en) * 1918-04-02 Charles Sonneborn Radiating-casing.
US2144480A (en) * 1935-12-24 1939-01-17 Westinghouse Electric & Mfg Co Transformer case structure
US3168777A (en) * 1960-06-07 1965-02-09 Reynolds Metals Co Method of making distribution transformer casings
US3489207A (en) * 1968-02-19 1970-01-13 Gen Electric Vapor-cooled electronics enclosures
US3741292A (en) * 1971-06-30 1973-06-26 Ibm Liquid encapsulated air cooled module
US4201523A (en) * 1978-01-23 1980-05-06 Olofsson Bjorn O E Device for cooling and silencing of noise of a compressor or vacuum pump
US4413674A (en) * 1980-11-28 1983-11-08 Westinghouse Electric Corp. Transformer cooling structure
US4549603A (en) * 1983-03-08 1985-10-29 Mitsubishi Denki Kabushiki Kaisha Heat exchanging device with heat exchanging plates
US4745966A (en) * 1986-07-22 1988-05-24 Westinghouse Electric Corp. Heat exchangers and electrical apparatus having heat exchangers

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3361867A (en) * 1960-06-07 1968-01-02 Reynolds Metals Co Sectional transformer housing
JPS5336630A (en) * 1976-09-17 1978-04-05 Toshiba Corp Radiator container for use in oil inclusive electric equipment
JPS5655014A (en) * 1979-10-11 1981-05-15 Hitachi Ltd Stationary inductive electric machine
US4492314A (en) * 1984-03-28 1985-01-08 Westinghouse Electric Corp. Reinforced tank wall structure for transformers

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1261637A (en) * 1918-04-02 Charles Sonneborn Radiating-casing.
US2144480A (en) * 1935-12-24 1939-01-17 Westinghouse Electric & Mfg Co Transformer case structure
US3168777A (en) * 1960-06-07 1965-02-09 Reynolds Metals Co Method of making distribution transformer casings
US3489207A (en) * 1968-02-19 1970-01-13 Gen Electric Vapor-cooled electronics enclosures
US3741292A (en) * 1971-06-30 1973-06-26 Ibm Liquid encapsulated air cooled module
US4201523A (en) * 1978-01-23 1980-05-06 Olofsson Bjorn O E Device for cooling and silencing of noise of a compressor or vacuum pump
US4413674A (en) * 1980-11-28 1983-11-08 Westinghouse Electric Corp. Transformer cooling structure
US4549603A (en) * 1983-03-08 1985-10-29 Mitsubishi Denki Kabushiki Kaisha Heat exchanging device with heat exchanging plates
US4745966A (en) * 1986-07-22 1988-05-24 Westinghouse Electric Corp. Heat exchangers and electrical apparatus having heat exchangers

Cited By (29)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5026373A (en) * 1988-10-17 1991-06-25 Surgical Dynamics, Inc. Surgical method and apparatus for fusing adjacent bone structures
US5246286A (en) * 1991-04-03 1993-09-21 Snap-On Tools Corporation Adhesively bonded tool cabinet and method of assembly thereof
US7651641B2 (en) 1995-12-21 2010-01-26 Cooper Industries, Inc. Vegetable oil based dielectric fluid and methods of using same
US5766517A (en) * 1995-12-21 1998-06-16 Cooper Industries, Inc. Dielectric fluid for use in power distribution equipment
US6037537A (en) * 1995-12-21 2000-03-14 Cooper Industries, Inc. Vegetable oil based dielectric coolant
US6184459B1 (en) 1995-12-21 2001-02-06 Cooper Industries Inc. Vegetable oil based dielectric coolant
US7871546B2 (en) 1995-12-21 2011-01-18 Cooper Industries, Inc. Vegetable oil based dielectric coolant
US6352655B1 (en) 1995-12-21 2002-03-05 Cooper Industries, Inc. Vegetable oil based dielectric fluid
US6398986B1 (en) 1995-12-21 2002-06-04 Cooper Industries, Inc Food grade vegetable oil based dielectric fluid and methods of using same
US6485659B1 (en) 1995-12-21 2002-11-26 Cooper Industries, Inc. Electrical apparatus with dielectric fluid blend of polyalphaolefins and polyol esters or triglycerides
US6613250B2 (en) 1995-12-21 2003-09-02 Cooper Industries, Inc. Vegetable oil based dielectric fluid and methods of using same
US20030164479A1 (en) * 1995-12-21 2003-09-04 Cooper Industries, Inc., A Texas Corporation Dielectric fluid having defined chemical composition for use in electrical apparatus
US20100097167A1 (en) * 1995-12-21 2010-04-22 Cooper Industries, Inc. Vegetable oil based dielectric coolant
US20040069975A1 (en) * 1995-12-21 2004-04-15 Cooper Industries, A Ohio Corporation Vegetable oil based dielectric fluid and methods of using same
US5736915A (en) * 1995-12-21 1998-04-07 Cooper Industries, Inc. Hermetically sealed, non-venting electrical apparatus with dielectric fluid having defined chemical composition
US20050040375A1 (en) * 1995-12-21 2005-02-24 Cooper Power Systems, A Ohio Corporation Vegetable oil based dielectric fluid and methods of using same
US6905638B2 (en) 1995-12-21 2005-06-14 Cooper Industries, Inc. Vegetable oil based dielectric fluid and methods of using same
US6726857B2 (en) 1995-12-21 2004-04-27 Cooper Industries, Inc. Dielectric fluid having defined chemical composition for use in electrical apparatus
US6234343B1 (en) 1999-03-26 2001-05-22 Papp Enterprises, Llc Automated portable medication radial dispensing apparatus and method
US6667438B2 (en) * 2001-12-05 2003-12-23 Ermco Padmount transformer enclosure
US20060144749A1 (en) * 2004-04-24 2006-07-06 Inrange Systems, Inc. Medicament carriers and methods of using same
US7451876B2 (en) 2004-04-24 2008-11-18 Inrange Systems, Inc. Universal medication carrier
US20050237222A1 (en) * 2004-04-24 2005-10-27 Bogash Robert C Universal medication carrier
US20080110786A1 (en) * 2006-11-09 2008-05-15 Bossi Christopher E Blister card carrier
US20110132579A1 (en) * 2008-08-11 2011-06-09 Green Revolution Cooling, Inc. Liquid Submerged, Horizontal Computer Server Rack and Systems and Method of Cooling such a Server Rack
US20110273255A1 (en) * 2010-05-10 2011-11-10 Robert Samuel Thompson Endoskeletal transformer tank
CN102881410A (en) * 2012-09-27 2013-01-16 宜兴市兴益特种变压器有限公司 Smoothing reactor
US9504190B2 (en) 2013-05-06 2016-11-22 Green Revolution Cooling, Inc. System and method of packaging computing resources for space and fire-resistance
US9756766B2 (en) 2014-05-13 2017-09-05 Green Revolution Cooling, Inc. System and method for air-cooling hard drives in liquid-cooled server rack

Also Published As

Publication number Publication date Type
EP0320187A1 (en) 1989-06-14 application
JPH0193711U (en) 1989-06-20 application

Similar Documents

Publication Publication Date Title
US3661293A (en) Rectangular freight container for international combined traffic, particularly for flowable bulk goods
US4703699A (en) Lightweight container car
US5282231A (en) Lower tie plate cast frame
US5425048A (en) Heating apparatus for induction ladle and vacuum furnaces
US4599949A (en) Light weight container car
US5040933A (en) Trailer for cylindrical container modules
US4770844A (en) Basket structure for a nuclear fuel transportation cask
US5441097A (en) Heat storage tank equipped with heat storage members and fabrication process for the same
US2196399A (en) Switchboard construction
US3690742A (en) Crane boom
US20100025407A1 (en) Method Of Converting Shipping Containers To Fluid Tanks
US4716013A (en) Nuclear reactor
US5174080A (en) Column and beam connecting assembly
US4795057A (en) Transport and/or storage container, particularly for a fluid and/or a fine grained loose material
US5449082A (en) Lift fitting for cargo containers
DE102004017150A1 (en) Partial oxidation in gas phase of three and/or four carbon precursor compounds to (meth)acrolein and/or (meth)acrylic acid with particulate catalyst in reactor having cuboidal thermoplate modules, cylindrical shell, and sealing element(s)
US4591064A (en) Freight container
US4840282A (en) Pressure-resistant tank
US4587506A (en) Safety transformer
US2747887A (en) Box frame bulkhead
US2216544A (en) Pickling tank
US7353864B2 (en) Apparatus for reducing thermal fatigue in heat exchanger cores
US3253996A (en) Pressure suppressing arrangement for nuclear reactor plant
US4054223A (en) Packings for transport and storage especially of liquid and pasty products
US4308967A (en) Protection ring for limiting the width of cracks in a storage tank wall

Legal Events

Date Code Title Description
AS Assignment

Owner name: WESTINGHOUSE ELECTRIC CORPORATION, WESTINGHOUSE BU

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNORS:BOOK, WILLIAM J.;HATFIELD, JOHN W.;REEL/FRAME:004808/0229

Effective date: 19871201

Owner name: WESTINGHOUSE ELECTRIC CORPORATION, WESTINGHOUSE BU

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:BOOK, WILLIAM J.;HATFIELD, JOHN W.;REEL/FRAME:004808/0229

Effective date: 19871201

AS Assignment

Owner name: ABB POWER T&D COMPANY, INC., A DE CORP., PENNSYLV

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:WESTINGHOUSE ELECTRIC CORPORATION, A CORP. OF PA.;REEL/FRAME:005368/0692

Effective date: 19891229

FPAY Fee payment

Year of fee payment: 4

FPAY Fee payment

Year of fee payment: 8

FPAY Fee payment

Year of fee payment: 12